李乐乐,罗军明,黄俊

• 1:南昌航空大学材料科学与工程学院

摘要(Abstract)：

以Ti粉、B粉、还原铁粉与羰基铁粉为原料,使用微波烧结技术原位生成了TiB_2钢结硬质合金,并研究了TiB_2含量对其组织及性能的影响。通过X衍射分析仪、扫描电镜、能谱分析仪对钢结硬质合金的物相、显微组织和元素分布进行了表征,采用显微硬度计和摩擦磨损试验仪对TiB_2钢结硬质合金的显微硬度及耐磨性进行了测试。结果表明:微波烧结技术可以制备颗粒细小的TiB_2钢结硬质合金,其相对密度均达到95%以上。随着TiB_2含量的增加,硬度显著提高,含量为40%时硬度达到1108HV0.1;随着TiB_2含量的增加,摩擦系数变化不大,但磨损体积减小,且磨损方式为粘着磨损。

关键词(KeyWords)： 原位合成;钢结硬质合金;TiB2;摩擦磨损

Abstract:

Keywords:

基金项目(Foundation): 江西省铜钨新材料重点实验室(2011-TW-08);; 江西省科技攻关项目(2011BBE50010)

作者(Author): 李乐乐,罗军明,黄俊

DOI: 10.13289/j.issn.1009-6264.2016-X187

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